Mefenamic Acid (Cont.)

How Does Mefenamic Acid Work?

Mefenamic acid and other NSAIDs are thought to work by inhibiting the action of certain hormones -- called prostaglandins -- that cause inflammation and pain in the body.
 

What Are the Effects?

By blocking the effects of prostaglandins, mefenamic acid is useful for reducing pain related to bone, muscle, or tendon injury or inflammation. It is also effective at decreasing uterine contractions.
 

When and How Do I Take Mefenamic Acid?

Some general considerations for when and how to take mefenamic acid include the following:
 
  • The medication comes in capsule form. It should be taken with food and a full glass of water.
 
  • Do not break, chew, or crush the capsules.
     
  • For mefenamic acid to work properly, you have to take it as prescribed. The medication will not work if you stop taking it.
     
  • It is important to take the lowest effective dose of mefenamic acid for the least amount of time in order to treat your condition. This will decrease the chances of developing serious side effects.
     

Dosing Information

The dose of mefenamic acid your healthcare provider recommends will vary, depending on a number of factors, including:
 
  • The medical condition being treated
  • Other medical conditions you may have
  • Other medications you may be taking.
     
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
 
(Click Mefenamic Acid Dosing for more information.)
  
(Mefenamic Acid Continued: Page 4)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;